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2002-05-21 |
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2002-01-29 |
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Polycondensates containing phosphinic and phosphonic acid groups |
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1996-06-25 |
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Process for the preparation of ether-sulphonates |
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Polycondensates containing phosphinic or phosphonic acid groups and siloxane groups |
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Process for dyeing polyester and polyester-containing textile materials |
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1995-06-20 |